You experienced a kernel panic.
Dealing with Kernel Panics
Disconnect any third-party peripherals including any USB hubs. Use safe mode to isolate issues with your Mac - Apple Supportthen boot the computer into Safe Mode. See Diagnosing problems- crash, freeze, panic, or spinning beach ball?, Don’t Panic! Understanding & Troubleshooting Kernel Panics in macOS, and How to fix kernel panics after installing OS X updates | MacIssues.
Kernel panics are indicative of possible hardware failure, so you should Check your Mac with hardware diagnostics or AHT. Read the kernel panic log: Mac OS X- How to log a kernel panic.
If you have no success figuring what is happening then you may need to examine the software you have running when the panics occur. Be sure it’s all current. If you must to resolve the problem erase the disk and reinstall macOS. Follow this outline to reset the computer to the factory-new state:
How To Do A Factory Reset
Selection A should be used on computers that came with Lion or later when factory new. These models had no disks included when new. Selection B is for Macs that came originally with Snow Leopard or earlier. These models shipped with Software Restore disks when new.
A. Factory reset of your Mac - Apple Support
B. Factory Reset Your Pre-Lion Mac
Follow these instructions until you get to Step 5 of Factory reset of your Mac - Apple Support. At Step 5 you will need a Snow Leopard DVD or the installer disc that came with the computer.
- Boot the computer using the Snow Leopard Installer Disc or the Disc 1 that came with your computer. Insert the disc into the optical drive and restart the computer. After the chime press and hold down the "C" key. Release the key when you see a small spinning gear appear below the dark gray Apple logo.
- After the installer loads select your language and click on the Continuebutton. When the menu bar appears select Disk Utility from the Utilities' menu. After Disk Utility loads select the hard drive entry from the left side list (out-dented entry - mfgr.'s ID and drive size.) Click on the Partitiontab in the Disk Utility main window. Set the number of partitions to one (1) from the Partitions drop down menu, click on Optionsbutton and select GUID, click on OK, then set the format type to MacOS Extended (Journaled), then click on the Applybutton.
- When the formatting has finished quit Disk Utility. Proceed with the OS X installation and follow the directions included with the installer.
- If you are planning to sell or give your computer away, then do the following: After you reformat your hard drive and reinstall OS X, the computer restarts to a Welcome screen and asks you to choose a country or region. If you want to leave the Mac in an out-of-box state, don't continue with the setup of the system. Instead, press Command-Qto shut down the Mac. When the new owner turns on the Mac, the Setup Assistant will guide them through the setup process.
